Heterogeneous photocatalytic oxidation of nitrite over iron-doped TiOsamples

Ali Milis, José Peral, Xavier Domènech, J. A. Navío

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36 Citations (Scopus)


The photocatalytic oxidation of nitrite to nitrate over iron-doped TiO2 in aqueous medium under different experimental conditions has been investigated. Specimens of TiO2 doped with different amounts of Fe3+ (between 0.2 and 10 wt.-%) were used; the most photoactive sample was found to be TiO2 doped with 0.5 wt.-%) of iron. The nitrite photooxidation follows; zero-order kinetics for all iron-doped TiO2 samples tested, while for pure TiO2 Langmuir-Hinshelwood kinetics is obtained. The role played by Fe3+ in the photocatalytic processes at the semiconductor-electrolyte interface is discussed. © 1994.
Original languageEnglish
Pages (from-to)67-74
JournalJournal of Molecular Catalysis
Issue number1
Publication statusPublished - 19 Jan 1994


  • iron
  • nitrite
  • oxidation
  • photocatalysis
  • titania


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